Which effect to use so my texture doesn't look so flat? (Cigar)
Here is the kind of node setting that you could use:
Mix a Diffuse with a Glossy, use the picture as factor of the Mix Shader, with a ColorRamp between to set the intensity.
Create a displacement picture of your texture with a software like CrazyBump or other, plug this image into the Height socket of a Bump node, and plug this node into the Normal sockets of the Diffuse and Glossy in order to give a bit of 3D relief.
It needs to be improved of course...